Bracket, lens

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OBJECT TYPE: SEELYSCOPE/DUOSCOPE/2 LENS
DATE: 1940–1949
ARTIFACT NUMBER: 1988.1218.001

MANUFACTURER: Ottawa Brass Mfg. Co.
MODEL: Unknown
LOCATION: Ottawa, Ontario, Canada

More Information

General Information

Serial #: N/A
Part Number: 1
Total Parts: 8
AKA: N/A
Patents: N/A
General Description: WOOD BOX; BRASS BRACKET

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length: 11.0 cm
Width: 5.2 cm
Height: 2.0 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Exploration and Survey
Category: Photogrammetry
Sub-Category: N/A

Manufacturer

AKA: Ottawa Brass
Country: Canada
State/Province: Ontario
City: Ottawa

Context

Country: Canada
State/Province: Unknown
Period: PROBABLY 1940'S & 1950'S
Canada: DEVELOPED BY THE DOMINION FOREST SERVICE AND MADE BY A CANADIAN COMPANY. PART OF THE DEVELOPMENT OF THE DUOSCOPE & SEELYSCOPE BY THE SERVICE.
Function: IT IS THE PART OF A DUOSCOPE OR SEELYSCOPE WHICH IS USED TO HOLD LENSES. THE LENSES ARE USED TO CONVERT AN AERIAL PHOTO TO THE SAME HORIZONTAL SCALE AS THE MAP IN USE. THIS CONVERSION ENABLES THE USER TO TRACE DETAILS FROM THE PHOTO TO THE MAP.
Technical: Unknown
Area Notes: Unknown

Details

Markings: SCRATCHED ON BRACKET (.1) - 'A.S.D./ Lens Bracket II/ B-6'/.2- '12'/.3- '14/ 2.75'/.4- '14'/.5- '22'/.6- '16"'/.7- '32 "'/.8- '32'/ PAPER AFFIXED TO INSIDE OF LID: 'OTTAWA BRASS MF'G. CO./ 542 WELLINGTON ST./ OTTAWA, ONT.,'
Missing: BOX IS BROKEN
Finish: BOX: VARNISHED
Decoration: N/A

CITE THIS OBJECT

If you choose to share our information about this collection object, please cite:

Ottawa Brass Mfg. Co., Bracket, lens, between 1940–1949, Artifact no. 1988.1218, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/id/1988.1218.001/

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